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* alpha-tdep.h (struct gdbarch_tdep): Add members `sc_pc_offset',

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`sc_regs_offset' and `sc_fpregs_offset'.
* alpha-tdep.c (SIGFRAME_PC_OFF, SIGFRAME_REGSAVE_OFF,
SIGFRAME_FPREGSAVE_OFF): Remove defines.
(alpha_sigtramp_register_address): Rewrite to use new members of
`struct gdbarch_tdep'.
(alpha_gdbarch_init): Initialize new members of struct
gdbarch_tdep'.
* alphafbsd-tdep.c (alphafbsd_use_struct_convention): Use
ALPHA_REGISTER_SIZE instead of DEPRECATED_REGISTER_SIZE.
(alphafbsd_sigtramp_start, alphafbsd_sigtramp_end): Nre variables.
(alphafbsd_pc_in_sigtramp): Implement.
(alphafbsd_sigtramp_offset): New function.
(alphafbsd_sigcontext_addr): New function.
(alphafbsd_init_abi): Initialize signal trampoline related members
of `struct gdbarch_tdep'.
(_initialize_alphafbsd_tdep): Add prototype.
This commit is contained in:
Mark Kettenis 2003-07-11 21:49:04 +00:00
parent ba292e4cc0
commit 138e7be507
4 changed files with 80 additions and 19 deletions
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20
gdb/ChangeLog
View file

@ -1,3 +1,23 @@
2003-07-11 Mark Kettenis <kettenis@gnu.org>
* alpha-tdep.h (struct gdbarch_tdep): Add members `sc_pc_offset',
`sc_regs_offset' and `sc_fpregs_offset'.
* alpha-tdep.c (SIGFRAME_PC_OFF, SIGFRAME_REGSAVE_OFF,
SIGFRAME_FPREGSAVE_OFF): Remove defines.
(alpha_sigtramp_register_address): Rewrite to use new members of
`struct gdbarch_tdep'.
(alpha_gdbarch_init): Initialize new members of struct
gdbarch_tdep'.
* alphafbsd-tdep.c (alphafbsd_use_struct_convention): Use
ALPHA_REGISTER_SIZE instead of DEPRECATED_REGISTER_SIZE.
(alphafbsd_sigtramp_start, alphafbsd_sigtramp_end): Nre variables.
(alphafbsd_pc_in_sigtramp): Implement.
(alphafbsd_sigtramp_offset): New function.
(alphafbsd_sigcontext_addr): New function.
(alphafbsd_init_abi): Initialize signal trampoline related members
of `struct gdbarch_tdep'.
(_initialize_alphafbsd_tdep): Add prototype.
2003-07-11 Theodore A. Roth <troth@openavr.org>
* Makefile.in (install-only): Quote sed expression when generating

29
gdb/alpha-tdep.c
View file

@ -753,24 +753,20 @@ alpha_sigtramp_frame_unwind_cache (struct frame_info *next_frame,
return info;
}
/* Return the address of REGNO in a sigtramp frame. Since this is all
arithmetic, it doesn't seem worthwhile to cache it. */
#ifndef SIGFRAME_PC_OFF
#define SIGFRAME_PC_OFF (2 * 8)
#define SIGFRAME_REGSAVE_OFF (4 * 8)
#define SIGFRAME_FPREGSAVE_OFF (SIGFRAME_REGSAVE_OFF + 32 * 8 + 8)
#endif
/* Return the address of REGNUM in a sigtramp frame. Since this is
all arithmetic, it doesn't seem worthwhile to cache it. */
static CORE_ADDR
alpha_sigtramp_register_address (CORE_ADDR sigcontext_addr, unsigned int regno)
alpha_sigtramp_register_address (CORE_ADDR sigcontext_addr, int regnum)
{
if (regno < 32)
return sigcontext_addr + SIGFRAME_REGSAVE_OFF + regno * 8;
if (regno >= ALPHA_FP0_REGNUM && regno < ALPHA_FP0_REGNUM + 32)
return sigcontext_addr + SIGFRAME_FPREGSAVE_OFF + regno * 8;
if (regno == ALPHA_PC_REGNUM)
return sigcontext_addr + SIGFRAME_PC_OFF;
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
if (regnum >= 0 && regnum < 32)
return sigcontext_addr + tdep->sc_regs_offset + regnum * 8;
else if (regnum >= ALPHA_FP0_REGNUM && regnum < ALPHA_FP0_REGNUM + 32)
return sigcontext_addr + tdep->sc_fpregs_offset + regnum * 8;
else if (regnum == ALPHA_PC_REGNUM)
return sigcontext_addr + tdep->sc_pc_offset;
return 0;
}
@ -1495,6 +1491,9 @@ alpha_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
tdep->dynamic_sigtramp_offset = NULL;
tdep->sigcontext_addr = NULL;
tdep->sc_pc_offset = 2 * 8;
tdep->sc_regs_offset = 4 * 8;
tdep->sc_fpregs_offset = tdep->sc_regs_offset + 32 * 8 + 8;
tdep->jb_pc = -1; /* longjmp support not enabled by default */

5
gdb/alpha-tdep.h
View file

@ -82,6 +82,11 @@ struct gdbarch_tdep
the sigcontext structure for that signal handler. */
CORE_ADDR (*sigcontext_addr) (struct frame_info *);
/* Offset of registers in `struct sigcontext'. */
int sc_pc_offset;
int sc_regs_offset;
int sc_fpregs_offset;
int jb_pc; /* Offset to PC value in jump buffer.
If htis is negative, longjmp support
will be disabled. */

45
gdb/alphafbsd-tdep.c
View file

@ -32,7 +32,7 @@ alphafbsd_use_struct_convention (int gcc_p, struct type *type)
/* All aggregate types that won't fit in a register must be returned
in memory. */
if (TYPE_LENGTH (type) > DEPRECATED_REGISTER_SIZE)
if (TYPE_LENGTH (type) > ALPHA_REGISTER_SIZE)
return 1;
/* The only aggregate types that can be returned in a register are
@ -54,14 +54,41 @@ alphafbsd_use_struct_convention (int gcc_p, struct type *type)
return 0;
}
/* Support for signal handlers. */
/* Return whether PC is in a BSD sigtramp routine. */
CORE_ADDR alphafbsd_sigtramp_start = 0x11ffff68;
CORE_ADDR alphafbsd_sigtramp_end = 0x11ffffe0;
static int
alphafbsd_pc_in_sigtramp (CORE_ADDR pc, char *func_name)
{
/* FIXME */
return 0;
return (pc >= alphafbsd_sigtramp_start && pc < alphafbsd_sigtramp_end);
}
static LONGEST
alphafbsd_sigtramp_offset (CORE_ADDR pc)
{
return pc - alphafbsd_sigtramp_start;
}
/* Assuming NEXT_FRAME is for a frame following a BSD sigtramp
routine, return the address of the associated sigcontext structure. */
static CORE_ADDR
alphafbsd_sigcontext_addr (struct frame_info *next_frame)
{
ULONGEST sp;
frame_unwind_unsigned_register (next_frame, ALPHA_SP_REGNUM, &sp);
return sp + 24;
}
/* FreeBSD 5.0-RELEASE or later. */
static void
alphafbsd_init_abi (struct gdbarch_info info,
struct gdbarch *gdbarch)
@ -74,13 +101,23 @@ alphafbsd_init_abi (struct gdbarch_info info,
/* Hook into the MDEBUG frame unwinder. */
alpha_mdebug_init_abi (info, gdbarch);
set_gdbarch_use_struct_convention (gdbarch, alphafbsd_use_struct_convention);
set_gdbarch_pc_in_sigtramp (gdbarch, alphafbsd_pc_in_sigtramp);
set_gdbarch_use_struct_convention (gdbarch, alphafbsd_use_struct_convention);
tdep->dynamic_sigtramp_offset = alphafbsd_sigtramp_offset;
tdep->sigcontext_addr = alphafbsd_sigcontext_addr;
tdep->sc_pc_offset = 288;
tdep->sc_regs_offset = 24;
tdep->sc_fpregs_offset = 320;
tdep->jb_pc = 2;
tdep->jb_elt_size = 8;
}
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_alphafbsd_tdep (void);
void
_initialize_alphafbsd_tdep (void)